PTT Radio Communication via WLAN The IP100H IP communication terminal transmits voice and preprogrammed text messages to the IP1000C controller through the wireless LAN access points installed in the IP network (VPN). The controller redirects traffic to the specified terminals. The IP100FS WLAN transceiver app can create a virtual radio and simple dispatch station on a Windows® based PC. The IP100FS can obtain position information (based on using access points) and status information of each terminal. Full-duplex Communication: With an optional earphone-microphone (HM-153LS, or HM-166LS) or headset (HS-102 with OPC-2359 or HS-85 with OPC-2144), the IP100H can talk and receive at the same time. All users in the system can communicate simultaneously.